Sabaku Sushi was great, and the garden veggie roll was probably the best vegetarian sushi I have ever had. The poke was good, too.
Here's some of what I saw in Arches:
In Salt Lake City, which I had visited briefly before, I hung out mostly in the Capitol (downtown) district, where I had great coffee at a little neighborhood cafe called Alchemy, OK beer and a funny pizza thing with corn and shrimp at Red Rock, and took a pleasant walk on the Capitol Building grounds, which are lovely.
The Great Salt Lake is indeed greatly salty, though there's really no place to walk unless you go to Antelope Island (Utah Lake in Provo is kind of a better park, though smaller and not tasty).
On the way out of town I hit the university neighborhood for some tasty Vietnamese rice noodle salad at Indochine (the chicken curry was nice, too).